root/pypi: links for crcgen

root/pypi crcgen-2.6.tar.gz
root/pypi crcgen-2.5.tar.gz
root/pypi crcgen-2.4.tar.gz
root/pypi crcgen-2.3.tar.gz
root/pypi crcgen-2.2.tar.gz
root/pypi crcgen-2.1.tar.gz
root/pypi crcgen-1.0.tar.gz